Pressing device closed-cycle control system

Abstract

The present invention relates to a closed loop control system of a press, which pertains to the technical field of a control system of the press. The present invention is mainly characterized in that a coder is connected and arranged at the relevant moving part by an industrial field bus, the industrial field bus is connected with DeviceNet host station, and the DeviceNet host station exchanges data with a PLC programmable logic controller; a touch screen and an office computer adopt a closed loop system which consists of Ethernet and the PLC programmable logic controller; the present operation of a lathe can be reflected in real time under the support of various software programs; by using the closed loop control system, the safety of the lathe can be greatly increased, an automatic production line interface is arranged, the real-time operation information of the lathe can be displayed on the touch screen in the form of character, flow chart, sketch map, and the like, for convenient understanding, the statistics of relevant parts can be carried out according to the design parameters of the lathe so as to remind users of regular maintenance. The present invention can obviously increase the work efficiency and facilitate the arrangement and statistics of the work for supervisors.

Description

technical field

[0001] The invention relates to a press closed-loop control system, which belongs to the technical field of press control systems. Background technique

[0002] Most of the current closed-type presses adopt an open-loop control system consisting of programmable logic controller PLC as the main controller, some switch input points reflecting the specific state of the machine tool, and some switch value output points for driving actions, and do not have real-time operation status feedback of the machine tool. Devices, that is, there is no detection and control system that reflects the operating status of the machine tool in real time, which has a great impact on the safety, reliability and automation of the machine tool.

[0003] 1) From a safety point of view, during the movement of the object, the existing open-loop control system can only passively make corresponding judgments based on the detection signals of the detection mechanism installed at the corresp...

Examples

Embodiment Construction

[0018] Further illustrate the present invention in conjunction with accompanying drawing and embodiment, as figure 1 As shown, the present invention includes a press, a PLC programmable logic controller of the press, a touch screen and an office computer, a main motor of the press, and the speed feedback of the main motor of the press is connected to the PLC programmable logic through the high-speed pulse signal of the incremental encoder. At the input end of the controller, the air pressure of the press balance cylinder, air storage cylinder and air cushion air storage cylinder is precisely controlled through the proportional valve, and the proportional valve exchanges data through the analog unit and the PLC programmable logic controller; the frequency converter of the main motor, and the slider The blind hole type multi-turn absolute value encoder with flexible connection to the drive shaft, the blind hole type multi-turn absolute value encoder with flexible connection with ...

technical field

[0001] The invention relates to a press closed-loop control system, which belongs to the technical field of press control systems. Background technique

[0002] Most of the current closed-type presses adopt an open-loop control system consisting of programmable logic controller PLC as the main controller, some switch input points reflecting the specific state of the machine tool, and some switch value output points for driving actions, and do not have real-time operation status feedback of the machine tool. Devices, that is, there is no detection and control system that reflects the operating status of the machine tool in real time, which has a great impact on the safety, reliability and automation of the machine tool.

[0003] 1) From a safety point of view, during the movement of the object, the existing open-loop control system can only passively make corresponding judgments based on the detection signals of the detection mechanism installed at the corresp...

Examples

Embodiment Construction

[0018] Further illustrate the present invention in conjunction with accompanying drawing and embodiment, as figure 1 As shown, the present invention includes a press, a PLC programmable logic controller of the press, a touch screen and an office computer, a main motor of the press, and the speed feedback of the main motor of the press is connected to the PLC programmable logic through the high-speed pulse signal of the incremental encoder. At the input end of the controller, the air pressure of the press balance cylinder, air storage cylinder and air cushion air storage cylinder is precisely controlled through the proportional valve, and the proportional valve exchanges data through the analog unit and the PLC programmable logic controller; the frequency converter of the main motor, and the slider The blind hole type multi-turn absolute value encoder with flexible connection to the drive shaft, the blind hole type multi-turn absolute value encoder with flexible connection with ...

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